Vehicle Hood Linkage Aperture Alignment for Secure Locking
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Solution Overview
Problem
Existing vehicle hood mechanisms fail to securely lock the hood in an opened state, leading to unintended movement and potential damage or safety issues.
Innovation Solution
A vehicle hood assembly with geometrically configured linkage apertures and a key structure that fits into both apertures when the hood is opened, ensuring the central axes align only in the opened state, allowing the key to lock the hood in place.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional hood hinge mechanism is used, then the hood can move freely between closed and opened states, but the hood cannot be securely locked in the opened state leading to unintended movement
Solution Approach 1:
The linkage mechanism is divided into separate components: a first linkage with a first aperture and a second linkage with a second aperture. Each linkage independently connects to the hood and body structure, allowing the key structure to selectively engage both apertures only in the opened state, thereby providing reliable locking without requiring a completely complex new mechanism
Solution Approach 2:
A key structure is introduced as an intermediary element that mediates between the first and second linkages. The key structure fits simultaneously into both apertures only when the hood is in the opened state, acting as a positive locking mechanism that prevents unintended movement while maintaining the simplicity of the original hinge system
2Reliability
If the hood is designed to stay securely opened, then safety and reliability are enhanced, but the mechanism requires precise geometric configuration of linkages and apertures
Solution Approach 1:
The first and second linkages are configured with asymmetric geometric relationships to the hood and body structure. The apertures are positioned such that their central axes align only in the specific opened state configuration, creating a unique geometric signature that ensures reliable locking while providing clear manufacturing targets for achieving the required precision
Solution Approach 2:
The linkage apertures are pre-configured in specific positions and orientations during manufacturing. This preliminary geometric configuration ensures that when the hood is opened to the correct position, the apertures automatically align to receive the key structure, eliminating the need for complex active alignment mechanisms during operation
Data Source
AI summary
A vehicle hood assembly can include a vehicle body structure and a hood moveable with respect to the vehicle body structure from a closed state to an opened state. A first linkage can connect the hood to the vehicle body structure and include a first linkage aperture extending therethrough. A second linkage can connect the hood to the vehicle body structure and include a second linkage aperture extending therethrough. A central axis of the first linkage aperture can be coaxial with a central axis of the second linkage aperture if the hood is in the opened state. A key structure can be provided and configured to simultaneously fit into both the second linkage aperture and the first linkage aperture if the hood is in the opened state.